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Division Spotlight
Radiation Protection & Shielding
The Radiation Protection and Shielding Division is developing and promoting radiation protection and shielding aspects of nuclear science and technology — including interaction of nuclear radiation with materials and biological systems, instruments and techniques for the measurement of nuclear radiation fields, and radiation shield design and evaluation.
Meeting Spotlight
Utility Working Conference and Vendor Technology Expo (UWC 2024)
August 4–7, 2024
Marco Island, FL|JW Marriott Marco Island
Standards Program
The Standards Committee is responsible for the development and maintenance of voluntary consensus standards that address the design, analysis, and operation of components, systems, and facilities related to the application of nuclear science and technology. Find out What’s New, check out the Standards Store, or Get Involved today!
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August 2024
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July 2024
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Latest News
NRC engineers share their expertise at the University of Puerto Rico
Robert Roche-Rivera and Marcos Rolón-Acevedo are licensed professional engineers who work at the U.S. Nuclear Regulatory Commission. They are also alumni of the University of Puerto Rico–Mayagüez (UPRM) and have been sharing their knowledge and experience with students at their alma mater since last year, serving as adjunct professors in the university’s Department of Mechanical Engineering. During the 2023–2024 school year, they each taught two courses: Fundamentals of Nuclear Science and Engineering, and Nuclear Power Plant Engineering.
Wenyu Cheng, Jie Liang, Mingjun Zhang, Fei Wei, Jinglin Li, Xiaochong Xue, Youshi Zeng, Ke Deng, Qin Zhang, Wei Liu
Nuclear Science and Engineering | Volume 197 | Number 7 | July 2023 | Pages 1534-1544
Technical Paper | doi.org/10.1080/00295639.2022.2158020
Articles are hosted by Taylor and Francis Online.
Large amounts of tritium will inevitably be produced during operation from the Thorium Molten Salt Reactor (TMSR) fueled by lithium salt, which is detrimental to the human body. Therefore, it is necessary to evaluate the radiation dose of the generated tritium. The tritium production, emission, and radiation dose of TMSRs were estimated by numerical calculation. According to this study, a 2-MW(thermal) TMSR produces 3.33E+14 Bq·yr−1 of tritium, discharges 2.42E+13 Bq·yr−1 of tritium, and causes 1.06 μSv·yr−1 of radiation dose. A 30-MW(thermal) TMSR produces 5.00E+15 Bq·yr−1 of tritiu.m, discharges 3.62E+14 Bq·yr−1 of tritium, and causes 2.02 μSv·yr−1 of radiation dose. A 2250-MW(thermal) TMSR produces 3.75E+17 Bq·yr−1 of tritium, discharges 2.77E+16 Bq·yr−1 of tritium, and causes 79 μSv·yr−1 of radiation dose. The radiation dose of TMSRs is much less than 1 mSv·yr−1, which is the dose limit for internal recruitment in China. It is determined that TMSRs are safe for humans regarding tritium hazard.